JPH0412310Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention relates to a rotary liquid filling machine that continuously fills liquid into the container while rotating the container by placing it on a rotating body. It is.

[Conventional technology]

Conventionally, as this type of filling machine, for example, an apparatus as disclosed in Japanese Patent Application Laid-open No. 74663/1983 is known. Container (cylinder) for high-pressure liquid such as LPG
The device for filling containers is equipped with a mechanical weighing section that uses a scale on a rotary body that rotates in a horizontal plane.The container is placed on the weighing section, and an operator manually inserts the container into the weighing section. By setting the weight according to the container loaded, the container is automatically filled with a fixed amount of liquid until the set weight matches the total weight of the container.

Incidentally, in such a filling machine, at the same time as filling a container with liquid, the weight of the container before filling with liquid and the weight after filling with liquid are recorded in a filling log or the like.

[Problem that the invention attempts to solve]

However, in the case of conventional filling machines such as those described above, the entries in the filling log etc. are only displayed in the weighing section, so entries in the filling log etc. are performed by the on-site worker who operates the weighing section. I had to. Therefore, there were problems such as requiring a lot of effort on the worker and causing typographical errors. In addition, in order to simplify the work process, the total weight of the container is set in the weighing section by taking into account the overflow due to the operation time of the filling nozzle opening/closing valve, and the fixed amount of liquid is filled based on this set weight. After getting used to it, the actual amount of liquid filled into the container is not checked, so if there is an error between the set filling amount and the actual filling amount, it is impossible to know the error, and it is difficult to perform metered filling. I disliked the lack of rigor.

This idea was created in consideration of the above circumstances, and allows for recording in a filling diary at a location away from the weighing section, reducing the burden on on-site workers, and making it easier to set the weighing section. To provide a rotary liquid filling machine that can measure the filling amount with high accuracy by informing the actual filling amount after quantitative filling based on weight.

(Means for Solving the Problems) In order to solve the above-mentioned problems, this invention has a plurality of mechanical weighing units on which containers are placed on a rotating body that rotates in a horizontal plane. A plurality of filling nozzles are provided along the rotational direction and fill liquid into respective containers on each weighing section in the rotating system of the rotating body, and the liquid is supplied to each filling nozzle in the rotating system of the rotating body. An air-operated on-off valve is installed in each of the supply channels, and between each of these on-off valves and each weighing section, the set weight for each weighing section and the total weight of the containers on each weighing section are matched. When a container placed on each weighing section of a rotary liquid filling machine is equipped with a valve control mechanism that automatically stops filling the container with liquid by closing the corresponding on-off valve. A load cell that detects the total weight and converts it into an electric signal is attached to each of the rotary bodies, and a slip ring is provided at the rotation center of the rotary body to transmit the electric signal of each load cell to a weight calculation display device outside the rotation system of the rotary body. It is something.

[Effect]

In this invention, when the set weight for the weighing section matches the total weight of the container on the weighing section, the on-off valve of the filling nozzle set in the container is automatically closed, filling is stopped, and the container is The load cell converts the total weight into an electric signal and transmits it to a weight calculation display device outside the rotating system, making it possible to measure the filling amount with high precision even at a location away from the weighing section.

[Example] This invention will be described below based on an illustrated example.

In the figure, reference numeral 1 denotes a rotary table (rotating body), and this rotary table 1 is rotatable in a horizontal plane around a support 2. As shown in FIG. The rotary table 1 is linked to a motor 5 via a rotation transmission mechanism 3, a shaft 4, etc. attached to the lower side thereof, and the rotary table 1 is rotated by the motor 5. Turntable 1
A plurality of weighing sections 6 are provided on the top along the rotation direction, and for these weighing sections 6,
Each is provided with an operation section 7. Weighing section 6
has a scale-type mechanical structure, and calculates the weight of the container (cylinder) placed on it and the weight set by the coarse adjustment knob 8 and fine adjustment knob 9 on the operation section 7. are compared, and their balanced state is represented by a scale 10 and a pointer 11 on the operating section 7. Therefore, scale 1
0 and the pointer 11, the set weight read from the scales of the two knobs 8 and 9 is determined as the weight of the container.

The liquid to be filled (high-pressure liquid such as LPG) is guided to the center of the rotary table 1 from outside the rotation system below the rotary table 1 through a source pipe 12. universal joint 13
The liquid is then distributed from the branch section 14 on the turntable 1 to the distribution pipe 15 of each operating section 7, and then connected to the filling nozzle 16 of each operating section 7. An on-off valve 17 operated by air pressure is provided in the middle of each distribution pipe 15.

Further, working air for each of the on-off valves 17 is guided to the center of the rotary table 1 from outside the rotation system above the rotary table 1 through a source pipe 18, and this source tube 18 is connected to a universal joint. from the branch section 20 on the turntable 1 to each of the operating sections 7 through the point 19.
It is distributed to each distribution pipe 21, and then connected to a control section 22 of each on-off valve 17. The control unit 22 opens the corresponding on-off valve 17 when the start button 23 of the operation unit 7 is pressed.
Filling of the liquid into the container from the filling nozzle 16 is started, and along with the filling of the liquid, the weighing part 6 is started.
When the weight of the upper container reaches the total container weight set by the knobs 8 and 9 of the operating section 7, the corresponding on-off valve 17 is automatically closed to automatically stop filling the liquid. Note that the operation section 7 includes
A stop button 24 is provided for emergency stop of liquid filling.

Further, each weighing section 6 is equipped with a load cell 25 that detects the weight of a container placed thereon and converts it into an electric signal (weight signal). Electric signals from these load cells 25 are sent to a weight calculation display device 27 outside the rotation system of the rotary table 1 by a slip ring 26 provided at the center of the rotary table 1.
is input.

The slip ring 26 is constructed as shown in FIG. That is, a ring stand 29 is attached to a shaft pipe 28 that rotates integrally with the rotating shaft of the turntable 1, and the display of this ring stand 29 is as follows.
A plurality of conductor rings 30 corresponding to each of the load cells 25 are provided concentrically with the shaft pipe 28. Each conductor ring 30 has a rotating terminal 3
1 to the corresponding load cell 25. Therefore, these shaft pipe 28, ring stand 29, conductor ring 30, and rotating terminal 31
rotates together with the turntable 1. On the other hand, a fixed frame 32 is provided outside the rotating system of the rotary table 1, and a large number of brushes 33 are fixed to this frame 32, which are always in contact with each conductor ring 30 regardless of the rotation of the rotary table 1. . Each brush 33 is connected to the weight calculation display device 27 through a corresponding fixed terminal 34.
Therefore, the electrical signals from each load cell 25 on the rotary table 1 side are transmitted to the rotary terminal 31, the conductor ring 30,
The weight is transmitted through the brush 33 and the fixed terminal 34 to the weight calculation display device 27 outside the rotation system of the rotary table 1.

The present filling apparatus constructed as described above fills containers in the following manner.

First, a container is placed on the weighing section 6 of the rotating turntable 1, and the filling nozzle 16 is set on the container.

The weight of the container is measured and recorded by the operating section 7 of the weighing section 6. Then, the known tare weight of the container, ie, the empty weight of the container, is subtracted from the measured total container weight to determine the remaining amount of liquid in the container. The weight of the container is also displayed on the weight calculation display device 27. Therefore, the measured weight can be recorded in an office where the weight calculation display device 27 is installed. In this case, the measurement of the container weight by the operating section 7 of the weighing section 6 may be omitted.

The total container weight, which is the sum of the tare weight of the container and the container capacity of the container, is set on the operating section 7 of the weighing section 6.

The start button 23 of the operation unit 7 is pressed to start filling the container with liquid.

When the weight of the container reaches the total weight of the container set by the operation unit 7, filling of the liquid is automatically stopped. The weight of the container after the filling is stopped is displayed on the weight calculation display device 27. Therefore, the weight of the container at this time can be recorded in an office where the weight calculation display device 27 is installed, and the actual amount of liquid filled into the container after filling the liquid can be known. .

Thereafter, the filling nozzle 16 is removed and the container is lowered from above the weighing section 6.

By performing the above operations sequentially, the turntable 1
A plurality of containers are simultaneously and continuously filled with liquid on each weighing section 6 of the container.

The weight calculation and display device 27 includes a device that automatically records the measured weight of the container by the load cell 25, and a device that automatically records the measured weight of the container, and calculates the amount used last time from the measured weight.
It is possible to attach a device for various calculations of the filling amount and the like.

Therefore, the rotary liquid filling machine of this embodiment is equipped with a load cell in the weighing section on the rotary body, and transmits the weight detection signal of this load cell to the outside of the rotation system of the rotary body through the slip ring. Since the weight of the container on the weighing section is displayed at a location outside the rotating system of the rotating body, it is possible to record in a filling diary, etc. at a location away from the weighing section, reducing the burden on on-site workers. can do. Moreover, the actual filling amount after quantitative filling based on the set weight of the weighing section is informed, and the filling amount can be measured with high precision.

It is also possible to automatically record the measured weight of a container by using the detection signal of the load cell transmitted outside the rotating system of the rotating body.In such a case, it is possible to automatically record the measured weight of the container. This not only saves labor as it is unnecessary, but also eliminates recording errors caused by human intervention. In addition, the detection signal of the load cell can be used to detect abnormal overfilling of the container and issue an alarm.
It is also possible to take safety measures such as automatically closing the main valve in the liquid supply line or stopping the liquid supply pump. In this way, various systemization can be achieved by using the detection signal of the load cell.

(Effects of the invention) As explained above, in the rotary liquid filling machine according to the invention, each weighing part on the rotating body detects the total weight of the containers placed thereon and generates an electric current. Each load cell is attached to convert it into a signal, and the electric signal from the load cell is transmitted to a weight calculation display device installed outside the rotating body system, so it is not possible to record a filling log or the like at a location away from the weighing unit. This allows for bookkeeping, which reduces the burden on on-site workers, and allows the actual filling amount to be known after quantitative filling is performed based on the set weight of the weighing unit, making it possible to measure the filling amount with high accuracy. It can be very effective if it can be done.

[Brief explanation of the drawing]

The drawings show one embodiment of this invention, with Fig. 1 being a vertical side view, Fig. 2 being a partially cutaway plan view, and Fig. 3 being a partially cutaway plan view.
The figure is a perspective view of a portion of the operating section, and FIG. 4 is an enlarged view of the slip ring with a portion cut away. 1... Turntable (rotating body), 6... Weighing section, 16
...Filling nozzle, 17...Opening/closing valve, 26...Slip ring, 27...Weight calculation display device.

Claims (1)

[Scope of utility model registration request] A plurality of mechanical weighing sections on which containers are placed are provided along the rotational direction of the rotating body on a rotating body that rotates in a horizontal plane, and each container on each weighing unit is a plurality of filling nozzles for filling the inside with liquid, and an air-operated on-off valve is installed in each of the liquid supply paths to each filling nozzle in the rotation system of the rotating body, and each of these on-off valves and each of the above-mentioned A valve is provided between the weighing section and automatically stops filling the container with liquid by closing the corresponding on-off valve when the set weight for each weighing section matches the total weight of the container on that weighing section. The rotary liquid filling machine is equipped with a control mechanism, and each weighing section is equipped with a load cell that detects the total weight of the container placed thereon and converts it into an electric signal, and the rotation of the rotating body is controlled by A rotary liquid filling machine characterized in that a slip ring is provided in the center for transmitting electric signals from each of the load cells to a weight calculation display device outside the rotation system of the rotary body.